Answer:
Why updating PRL will help ?
It is necessary to update the PRL. Because the new towers can be added all the time and it is required to keep the list updated all the time. Most of the LTE smart phones will auto update the PRL as soon as you are on roaming with different carrier.
Where would you find this option on your Android smartphone to perform the update?
For most of Android Device :
you can also check your PRL by tapping
Home > Menu > Settings > System updates > Update PRL
Or In some other Android phones with version 10 , you may find the option to update PRL as below
Home > All App Icon > Settings > System Update > Update PRL > Click Ok.
Explanation:
Preferred Roaming List is also known as PRL is a database used by CDMA smart phones. Normally, telecom service providers like Verizon or sprint will provide the PRL. The PRL is a list that allows your phone to roam off of towers that are not part of your home network.
It is necessary to update the PRL. Because the new towers can be added all the time and it is required to keep the list updated all the time. Most of the LTE smart phones will auto update the PRL as soon as you are on roaming with different carrier.
Updating PRL is necessary as it will choose the correct tower and connect the call. If you are already having signal from your carrier then PRL will ensure that your connectivity with your home carrier is intact even though other network’s signal strength is better than your home network.
PRL will consist of information like radio bands, sub bands and service provider ID’s. When a user moves from home network to another carrier network then it will search all the details and helps in connecting the correct tower. If the PRL is not valid or incorrect then phone won’t be able to roam outside the home network. PRL data base also consists of acquisition table which will have list of radio frequencies to look into and it also contains a system table which consists of towers to connect with. If PRL is not updated then the system table and acquisition table will have stale data and will not be able to find the correct information.
On the Android Device :
you can also check your PRL by tapping
Home > Menu > Settings > System updates > Update PRL
Or In some other Android phones with version 10 , you may find the option to update PRL as below
Home > All App Icon > Settings > System Update > Update PRL > Click Ok.
